This subclass covers the structural adaptation of dynamo-electric machines for the purpose of their control.

This subclass does not cover starting, regulating, electronically commutating, braking, or otherwise controlling motors, generators or dynamo-electric converters, in general, which are covered by subclass H02P.

Attention is drawn to the Notes following the titles of class B81 and subclass B81B relating to "microstructural devices" and "microstructural systems".

Protection against failure of cooling arrangements, e.g. due to loss of cooling medium, due to interruption of the circulation of cooling medium (circuit arrangements affording such protection H02H 7/00) [2013-01]

H02K 9/26

.

Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters [2016-11]

H02K 9/28

.

Cooling of commutators, slip-rings, or brushes, e.g. by ventilating, (current collectors in general H01R 39/00) [2013-01]

H02K 11/00

Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection (casings, enclosures or supports H02K 5/00) [2016-01]

H02K 11/0094

.

{Structural association with other electrical or electronic devices} [2013-01]

H02K 11/01

.

for shielding from electromagnetic fields (means for preventing or reducing eddy-current losses in the winding heads by shielding H02K 3/42) [2016-01]

Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis [2016-01]

H02K 11/38

. .

Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type [2016-01]

H02K 11/40

.

Structural association with grounding devices [2016-01]

H02K 13/00

Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures H02K 5/14); Disposition of current collectors in motors or generators; Arrangements for improving commutation [2016-11]

H02K 13/003

.

{Structural associations of slip-rings} [2013-01]

H02K 13/006

.

{Structural associations of commutators} [2013-01]

H02K 13/02

.

Connections between slip-rings and windings [2016-11]

H02K 13/04

.

Connections between commutator segments and windings [2016-11]

H02K 13/06

. .

Resistive connections, e.g. by high-resistance chokes or by transistors [2016-11]

{Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine (methods or apparatus for simultaneously twisting a plurality of hairpins prior to mounting H02K 15/0428); Applying fastening means on winding heads} [2013-01]

{characterised by the method or apparatus for simultaneously twisting a plurality of hairpins open ends after insertion into the machine (for simultaneously twisting a plurality of hairpins prior to mounting into the machine H02K 15/0428)} [2013-01]

{characterised by the method or apparatus for simultaneously twisting a plurality of hairpins (for simultaneously twisting a plurality of hairpins open ends after insertion into the machine H02K 15/0087)} [2013-01]

Machines with more than one rotor or stator {(machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K 51/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K 21/029)} [2013-01]

{characterised by the squirrel-cage or other short-circuited windings} [2013-01]

H02K 17/18

. . .

having double-cage or multiple-cage rotors [2016-11]

H02K 17/185

. . . .

{characterised by the double- or multiple cage windings} [2013-01]

H02K 17/20

. . .

having deep-bar rotors [2016-11]

H02K 17/205

. . . .

{characterised by the deep-bar windings} [2013-01]

H02K 17/22

. .

having rotors with windings connected to slip-rings [2016-11]

H02K 17/24

. . .

in which both stator and rotor are fed with AC [2016-11]

H02K 17/26

. .

having rotors or stators designed to permit synchronous operation [2016-11]

H02K 17/28

. .

having compensating winding for improving phase angle [2013-01]

H02K 17/30

. .

Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches [2016-11]

Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter ({machines with rotors and moving stators connected in a cascade H02K 16/025;} control of cascade-arrangements H02P) [2013-01]

Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors [2017-08]

H02K 19/08

. . .

Motors having windings on the stator and a smooth rotor without windings of material with large hysteresis, e.g. hysteresis motors [2016-11]

H02K 19/10

. .

for multi-phase current [2013-01]

H02K 19/103

. . .

{Motors having windings on the stator and a variable reluctance soft-iron rotor without windings} [2013-01]

H02K 19/106

. . .

{Motors having windings in the stator and a smooth rotor of material with large hysteresis without windings} [2013-01]

H02K 19/12

. . .

characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing [2016-11]

H02K 19/14

. .

having additional short-circuited windings for starting as asynchronous motors [2016-11]

H02K 19/16

.

Synchronous generators [2013-01]

H02K 19/18

. .

having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generators [2016-11]

H02K 19/20

. . .

with variable-reluctance soft-iron rotors without winding [2016-11]

H02K 19/22

. .

having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators [2016-11]

H02K 19/24

. . .

with variable-reluctance soft-iron rotors without winding [2016-11]

H02K 19/26

. .

characterised by the arrangement of exciting windings [2016-11]

H02K 19/28

. . .

for self-excitation [2013-01]

H02K 19/30

. . .

for compounding [2013-01]

H02K 19/32

. . .

for pole-changing [2013-01]

H02K 19/34

. .

Generators with two or more outputs [2013-01]

H02K 19/36

. .

Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches [2016-11]

Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path {(electromagnetic launchers F41B 6/00)} [2013-01]

{with armature and magnets on one member, the other member being a flux distributor} [2013-01]

H02K 41/035

. .

DC motors; Unipolar motors [2016-11]

H02K 41/0352

. . .

{Unipolar motors} [2013-01]

H02K 41/0354

. . . .

{Lorentz force motors, e.g. voice coil motors} [2013-01]

H02K 41/0356

. . . . .

{moving along a straight path} [2013-01]

H02K 41/0358

. . . . .

{moving along a curvilinear path} [2013-01]

H02K 41/06

.

Rolling motors, i.e. having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator; {Nutating motors, i.e. having the rotor axis inclined with respect to the stator axis and performing a nutational movement as the rotor rolls on the stator} [2013-01]

H02K 41/065

. .

{Nutating motors} [2013-01]

H02K 44/00

Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa [2013-01]